Klinefelter syndrome is a genetic condition that affects only males. Here's what you should know about the causes, symptoms, and treatment options for the condition. Klinefelter syndrome is a ...

Klinefelter syndrome is the most common sex-chromosome disorder; it affects approximately one in every 660 men. This syndrome is characterized by the presence of one or more extra X chromosomes ...

Karyotyping performed by G-banding technique revealed a 47 XXY karyotype, which is diagnostic of Klinefelter's syndrome. Doppler ultrasound of the leg ulcers disclosed partial thrombus in the ...

"You either have XX or XY chromosomes," Rep. Nancy Mace, R-S.C., wrote Feb. 20 on X. "Those are the options." Most commonly, a person is born with two X chromosomes (female) or an X and a Y (male).

Scott W. Stuart, MD, MS; Casey H. King, BA; G. Shashidar Pai, MD Such observations emphasize the importance of clarifying the origin of a genetic variation by studying the parents for comparison ...

About 15% of men with nonobstructive azoospermia have Klinefelter syndrome. The testes of men with the nonmosaic (47,XXY) form of this condition show only rare, focal areas of spermatogenesis ...